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低成本、多种化学类型电池充电器电路

精度为0.7%的输入限流、多化学类型电池充电器,提供完备的解决方案

产品详情

主要特征

Parametric specs for Battery Chargers
Package/Pins QSOP/28
Budgetary
Price (See Notes)
6.53
缩小

简化框图

Technical Docs

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参量

Parametric specs for Battery Chargers
Package/Pins QSOP/28
Budgetary
Price (See Notes)
6.53

主要特征

  • Input Current Limiting
  • ±0.5% Output Voltage Accuracy Using Internal Reference (0°C to +85°C)
  • Programmable Battery Charge Current >4A
  • Analog Inputs Control Charge Current and Charge Voltage
  • Monitor Outputs for:
    • Current Drawn from AC Input Source
    • Charging Current
    • AC Adapter Present
  • Up to 18.2V (max) Battery Voltage
  • 8V to 28V Input Voltage
  • >95% Efficiency
  • 99.99% (max) Duty Cycle for Low-Dropout Operation
  • Charges Any Battery Chemistry: Li+, NiCd, NiMH, Lead Acid, etc.

应用/用途

  • 手持式终端
  • 笔记本电脑和亚笔记本电脑
  • PDA及其它手持设备

描述

The MAX1772 is a highly-integrated, multichemistry battery-charger control IC that simplifies the construction of accurate and efficient chargers. The MAX1772 uses analog inputs to control charge current and voltage and can be programmed by the host or hardwired. High efficiency is achieved by a buck topology with synchronous rectification.

Maximum current drawn from the AC adapter is programmable to avoid overloading the AC adapter when supplying the load and the battery charger simultaneously. This enables the user to reduce the cost of the AC adapter. The MAX1772 provides outputs that can be used to monitor the current drawn from the AC adapter, battery-charging current, and the presence of an AC adapter.

The MAX1772 can charge two to four lithium-ion (Li+) series cells, easily providing 4A. When charging, the MAX1772 automatically transitions from regulating current to regulating voltage. It is available in a space-saving 28-pin QSOP package.

简化框图

MAX1772:引脚配置 MAX1772:引脚配置 Zoom icon

Technical Docs

支持和培训

在Maxim的知识库中搜索技术问题的答案

过滤搜索

Maxim的专业工程师团队也会为您解答相应的技术问题,请访问Maxim的 支持中心